Don't crash when the HTTP request for getting the server status message fails
This fixes the crash that keeps Windows 7 users out of the game when support.cyanworlds.com is down, reported with some regularity e.g. at http://mystonline.com/forums/viewtopic.php?f=40&t=27352 .
Apparently on Windows 7, unlike on Windows XP and contrary to its documentation, WinHttpReadData() does not zero its lpdwNumberOfBytesRead argument when called with an invalid request, so the lack of error checking here bites.
and reenable as much USE_BINK_SDK stuff as empirically needed to get the Yeesha intro movie cave to disappear on its own, as before merging Cyan's Build 918.
Not the cleanest way, but I'm trying to minimize effort spent on this until we can get the proper solution, VP9 video support, from https://github.com/H-uru/Plasma/pull/458 .
